From: Jacob Pan Date: Mon, 5 Dec 2022 13:14:12 +0000 (+0800) Subject: iommu/vt-d: Fix buggy QAT device mask X-Git-Tag: v6.1~1^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=81c95fbaebfa5990c3c786c8c3e87426a33106fe;p=platform%2Fkernel%2Flinux-starfive.git iommu/vt-d: Fix buggy QAT device mask Impacted QAT device IDs that need extra dtlb flush quirk is ranging from 0x4940 to 0x4943. After bitwise AND device ID with 0xfffc the result should be 0x4940 instead of 0x494c to identify these devices. Fixes: e65a6897be5e ("iommu/vt-d: Add a fix for devices need extra dtlb flush") Reported-by: Raghunathan Srinivasan Signed-off-by: Ashok Raj Signed-off-by: Jacob Pan Link: https://lore.kernel.org/r/20221203005610.2927487-1-jacob.jun.pan@linux.intel.com Signed-off-by: Lu Baolu Signed-off-by: Joerg Roedel --- diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 5287efe..644ca49 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -1402,7 +1402,7 @@ static void domain_update_iotlb(struct dmar_domain *domain) * check because it applies only to the built-in QAT devices and it doesn't * grant additional privileges. */ -#define BUGGY_QAT_DEVID_MASK 0x494c +#define BUGGY_QAT_DEVID_MASK 0x4940 static bool dev_needs_extra_dtlb_flush(struct pci_dev *pdev) { if (pdev->vendor != PCI_VENDOR_ID_INTEL)